Schwinger's variational principle for e/sup -/-He/sup +/

Journal Article · Tue May 01 04:00:00 EDT 1984 · Phys. Rev. A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.29.2470· OSTI ID:7051155

Maleki, N

Schwinger's variational principle is applied to low-energy electron--hydrogenlike-ion collisions in the static-exchange approximation. Wave functions, phase shifts, and quantum defects for energies near ionization thresholds are obtained. All of the integrals, including the integrals involving Coulomb Green's functions, are evaluated in closed form. When a few Slater-type trial functions are used, good agreement with the results of direct numerical integration of close-coupling equations is achieved.

• Research Organization: Department of Physics and Astronomy, Behlen Laboratory of Physics, University of Nebraska, Lincoln, Nebraska 68588
• OSTI ID: 7051155
• Journal Information: Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 29:5; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
CHARGED PARTICLES
COLLISIONS
ELECTRON COLLISIONS
ELECTRON-ION COLLISIONS
ENERGY LEVELS
EXCITED STATES
FUNCTIONS
HELIUM IONS
ION COLLISIONS
IONS
PHASE SHIFT
RYDBERG STATES
SCHWINGER VARIATIONAL METHOD
VARIATIONAL METHODS
WAVE FUNCTIONS